Looks like a ride over to me.
10.03 A Miss
It is a miss to ride inside a turn buoy or outside the entrance or exit gate, or to ride over, straddle, or jump a turn buoy, but there is no penalty for grazing a turn or gate buoy with the ski or part of the body. ―Riding over‖ shall be defined as hitting a turn or gate buoy with the ski so as to move it significantly from its position or temporarily sink it. Hitting a turn or exit gate buoy less severely shall be considered as ―grazing.‖ (See chart in appendix)